where the standard errors shown are from the residual fitting error, neglecting
the uncertainty in measurement.
The experimental measurements exhibited a slightly curved trend,
but the number of points was not great enough to justify a higher-order fit.
Solving the Rankine-Hugoniot equations for a steady shock
[1]} using the fitted parameters rather
than the individual shock measurements, the highest shock pressure
was 38.6 GPa, giving a mass density of 1.54 g/cm\(^3\) .
The observed sound speed in liquid ammonia at 203 K is 1.9535 km/s
[2]}, which is consistent with the extrapolated Hugoniot data.
(Fig. REF )
<FIGURE>